My friend recently turned me into this spoiler avoiding creature that takes his classes of during the trailers and murmurs "nananananana" for the 20 mins or so. But at least now I can watch a movie without any predjuices... until, as you wrote so humorously, my son reaches the age of trailers. Terrifying, thought.
What are your favourite ones in this age of "sellsellsell" and money shot after money shot filled trailers?